the answer to your question is the civil rights movement caused the assassination of Dr.Martin Luther King Jr. However, you'd better try to write it yoursefl or rather check Prime Writing site whether they have a similar article on their blog.
Jefferson replaced Johnston with Hood because he became impatient with Johnston's strategies and Hood was more aggressive.
Answer:
What was the problem with the velocipede?
It had no brakes or pedals.
What was the solution?
Pedals were attached to the wheels.